Industry’s First Monolithic DC-DC Switcher IC with 200 V MOSFET Shrinks Converter Footprint

June 25, 2002
Highly Integrated DPA-SwitchTM Family from Power Integrations Enables Higher Power Densities for Distributed Power Architectures

SAN JOSE, Calif. - June 25, 2002 – Power Integrations, Inc. (Nasdaq: POWI), announced today the availability of its revolutionary new IC that dramatically simplifies DC-DC power conversion design. The DPA/Switch is the first highly integrated high-voltage power conversion IC designed specifically for use in DC-DC converters and distributed power architectures (DPAs). The introduction of this product line further reinforces the company's strategy to diversify its revenue stream by opening up an entirely new customer base. The company expects to recognize initial revenues from the DPA-Switch starting in the middle of 2003.

The simple-to-use chip eliminates up to 50 external components from the design of a typical discrete DC/DC converter, resulting in a shorter design cycle, smaller board size, lower system cost, and higher reliability. The four-device family covers a wide input voltage range of 16 V to 75 V, targeting 24 V/48 V applications. It is capable of delivering continuous output power of up to 100 W.

The innovative DPA-Switch is the industry's first monolithic DC-DC integrated circuit that cost effectively combines a 200-volt power MOSFET, PWM controller, and fault protection circuitry onto a single CMOS chip. The internal power MOSFET features industry leading switching speeds. The DPA-Switch family is based on the same proven technology developed by the company for its successful TOPSwitch® family, with almost one billion devices shipped since 1994.

Using three user configurable pins, the DPA-Switch can be configured to allow the following functions: line sensing (input under-voltage detection/overvoltage shutdown and variable maximum duty cycle), accurate externally set current limit, remote on-off, synchronization to an external lower frequency, and a user-selectable 300 kHz or 400 kHz switching frequency. Additional built-in features include internal soft-start, cycle skipping at light load for high standby efficiency, integrated overload/open loop protection, and internal hysteretic thermal shutdown for automatic fault recovery. All critical parameters have tight temperature and absolute tolerances to simplify design and optimize system cost. The DPA-Switch supports flyback and single-ended forward topologies and is compatible with any self-driven synchronous rectification (SDSR) scheme to boost efficiency in low voltage, high current output applications.

Applications for the DPA-Switch include networking and telecommunication line cards (central office equipment including xDSL, ISDN, PABX, etc.), "brick" DC-DC converter modules, digital feature and VoIP phones, PC servers, and industrial controls.

"This product family represents a major breakthrough for power supply designers in their quest to reduce the size and cost of DC-DC converters while improving power density and reliability," stated Balu Balakrishnan, Power Integrations President and CEO. "We have incorporated much of the complexity of DC-DC power supply design into this chip, greatly simplifying the job of constructing a compact highly efficient converter."

Pricing for the DPA-Switch family in 1,000 piece quantities ranges from $2.76 each for the DPA423R-TL, an 18 W part, to $5.76 each for the 100 W rated DPA426R-TL. All parts are housed in the TO-263 package and are shipped in reels of 750 units. Sample quantities are available from stock with production quantities available 6 weeks ARO.

DPA-Switch is supported by a number of design tools including a 32-page datasheet, a Design Guide application note (AN-31), a Design Accelerator Kit (DAK-21) containing an operational 30 W DC-DC converter and product samples, and the company's power supply design software program, PI ExpertTM.

Power Integrations, Inc. is a leading supplier of high-voltage analog integrated circuits for use in power conversion. For more information, contact the company at 5245 Hellyer Avenue, San Jose, California 95138, PH: (408) 414-9200 or visit the company's web site at

Safe Harbor Statement

This press release contains forward-looking statements which reflect management's current forecast of certain aspects of the Company's future business. These forward-looking statements are based on current information which we have assessed, but which by its nature, is subject to rapid and even abrupt changes. Forward looking statements are denoted by the use of such words and phrases as "will," "expects," "believe," and similar words and phrases that look toward future events or performance. The Company's actual results could differ materially from those projected or implied by our forward looking statements due to risks and uncertainties associated with the Company's business. These include, but are not limited to, changes and shifts in customer demand away from products which integrate the Company's ICs to products which do not; the lengthy sales cycle for the Company's products which often results in the Company incurring substantial expenses before the Company generates significant revenues, if any, from the sale of a new product or even before a customer, if any, decides to use the new product in any of its products; and the associated risk that the customer's product in which the Company's new product is used will not be commercially successful due to a variety of factors including cost relative to competitive products at the time the customer's product enters the market. Other factors include, but are not limited to, our ability to maintain and establish strategic relationships; the risks inherent in the development and delivery of complex technologies; our ability to attract, retain and motivate qualified personnel; the emergence of new markets for our products and services, and our ability to compete in those markets based on timeliness, cost and market demand; and our limited financial resources. We more fully discuss these and other risk factors in the Company's most recent reports on Form 10-K and Form 10-Q filed with the Securities and Exchange Commission.

NASDAQ: POWI $119.08 -1.23
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